FIELD: mining.
SUBSTANCE: group of inventions relates to mining and can be used for finishing, preparing and/or operation of the well bore. The device comprises a tubular housing defining an internal channel, one or more injection inflow regulators and one or more operational inflow regulators. One or more injection inflow regulators may comprise one or more first back-flow valves in fluid communication with the internal channel. And each first back-flow valve provides flowing of fluid through it from the inner channel to the wellbore area and substantially blocking the reverse flow of fluid through it. One or more operational inflow regulators may comprise one or more second back-flow valves connected to the tubular housing. And each second back-flow valve provides flowing of fluid through it from the wellbore into the inner channel and substantially prevents the reverse flow of fluid through it.
EFFECT: technical result is to increase the efficiency of finishing of a well drilled with large vertical deviation.
22 cl, 10 dwg
